Wrenchcalibur is the weapon wielded by High Tinker Gelbin Mekkatorque. It is roughly shaped like its namesake tool. The complex series of cogs, pistons, runes, and levers somehow enables it to serve as a good mace. Gelbin usually carries Wrenchcalibur in his belt loop, but his skills as a tactician allow him to put up a decent fight without it.
Wrenchcalibur appears as an epic weapon for the warrior class in the Rise of Shadows expansion for Hearthstone. Its flavor text reads: "Whoso pulleth out this wrench from the toolbox is rightwise king of the lab."